<template>
  <div id="app">
    <example></example>

    <el-input
      placeholder="输入关键字进行过滤2"
      v-model="filterText">
    </el-input>
    <el-tree
      class="filter-tree"
      :filter-node-method="filterNode"
      ref="tree2"
      :data="data2"
      :props="defaultProps"
      show-checkbox
      node-key="id"
      default-expand-all
      :expand-on-click-node="false"
      :render-content="renderContent">
    </el-tree>
  </div>
</template>
<script>
  import Example from './components/Example.vue';
  let id=1000;
  export default {
    name: 'app',
    components: {
      Example
    },
    watch: {
      filterText(val){
        this.$refs.tree2.filter(val);
      }
    },




   methods: {

    filterNode(value,data){
      if(!value) return true;
      return data.label.indexOf(value) !== -1;
    },
     append(store, data) {
       store.append({ id: id++, label: 'testtest', children: [] }, data);
     },

     remove(store, data) {
       store.remove(data);
     },

     renderContent(h, { node, data, store }) {
       return (
         <span>
           <span>
             <span>{node.label}</span>
           </span>
           <span style="float: right; margin-right: 20px">
             <el-button size="mini" on-click={ () => this.append(store, data) }>Append</el-button>
             <el-button size="mini" on-click={ () => this.remove(store, data) }>Delete</el-button>
           </span>
         </span>);
     }
    },

    data(){
    return {
        filterText: '',
        data2: [{
          id: 1,
          label: '一级 1',
          children: [{
            id: 4,
            label: '二级 1-1',
            children: [{
              id: 9,
              label: '三级 1-1-1'
            }, {
              id: 10,
              label: '三级 1-1-2'
            }]
          }]
        }, {
          id: 2,
          label: '一级 2',
          children: [{
            id: 5,
            label: '二级 2-1'
          }, {
            id: 6,
            label: '二级 2-2'
          }]
        }, {
          id: 3,
          label: '一级 3',
          children: [{
            id: 7,
            label: '二级 3-1'
          }, {
            id: 8,
            label: '二级 3-2'
          }]
        }],
        defaultProps: {
          children: 'children',
          label: 'label'
        }
      };
    }
  };
</script>
